Mar 20, 2011 11:00pm PDT
a nuclear spill. >>> good evening everyone, i'm frank somerville. when the quake hit in japan, most people in the bay area braced. it runs from the crescent city area north all the way down to canada's vancouver island. it's an area that scientists say is overdue for a magnitude quake the size of a nine. we have two reports beginning with our science editor john fowler who brought us this report in february 28, 2001. the same day a magnitude 6.8 quake hit near washington. >>> the sea floor is waving toward the continent. that's what triggered today's earthquake. the entire cascade mountain range and the mount st. helen's eruption are from rising rock. the so called cascadous eruption zone threatenings california's coast. geological evidence near southern oregon shows that huge earthquakes magnitude nine or even greater have happened regularly every 300 years or so along the coast. one is due now. the 7.3 quake that hit petrolia may have been a precursor to the mega quake that would be the biggest in recorded history. >> one could come soon, one could come 200 years from now. but we'